<template>
    <div class="goodsinfo-container">
        <transition
        @before-enter="beforeEnter"
        @enter="enter"
        @after-enter="afterEnter">
            <div class="ball" v-show="ballFlag" ref="ball"></div>
        
        </transition>
        <!-- 轮播图 -->
        <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<swipe :lunbotuList="lunbotu" :isfull="false"></swipe>
					</div>
				</div>
		</div>
        <!-- 商品购买 -->
        <div class="mui-card">
				<div class="mui-card-header">{{ goodsInfo.title }}</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p class="price">
                            市场价：<del>￥{{ goodsInfo.market_price }}</del>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                            促销价：<span class="now-price">￥{{ goodsInfo.sell_price }}</span>
                        </p>
                        <p>购买数量：<numbox @getcount="getSelectedCount" :max="goodsInfo.stock_quantity"></numbox></p>
                        <p>
                            <mt-button type="primary" size="small">立即购买</mt-button>
                            <mt-button type="danger" size="small" @click="addShopCar">加入购物车</mt-button>
                        </p>
					</div>
				</div>
				
			</div>

        <!-- 商品参数 -->
        <div class="mui-card">
				<div class="mui-card-header">商品参数</div>
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<p>商品货号：{{ goodsInfo.goods_no }}</p>
                        <p>库存情况：{{ goodsInfo.stock_quantity }}件</p>
                        <p>上市时间：{{ goodsInfo.add_time }}</p>
					</div>
				</div>
				<div class="mui-card-footer">
                    <mt-button type="primary" size="large" plain @click="goDesc()">图文介绍</mt-button>
                 
                    <mt-button type="danger" size="large" plain @click="goComment()">商品评论</mt-button>
                </div>
			</div>
    </div>
</template>

<script>
import swipe from '../subcomponents/swipe.vue'
import numbox from '../subcomponents/numbox.vue'
export default {
    
    data(){
       return {
           id:this.$route.params.id,
            lunbotu:[],
            goodsInfo:{},
            ballFlag:false,//控制小球显示开关
            selectedCount:1
            
       }
    },
    components:{
        swipe,
        numbox
    },
    created(){
        this.getLunbotu()
        this.getGoodsInfo()
    },
    methods:{
        getLunbotu(){
            var lbtid = this.id+'.json'
            console.log(this.id);
            this.$http.get('picture/'+lbtid).then(result=>{
                if(result.body.status === 0){
                    this.lunbotu = result.body.message
                }
            })
        },
        getGoodsInfo(){
            var ginfoId = this.id+'.json'
            this.$http.get('goods/'+ginfoId).then(result=>{
                if(result.body.status === 0){
                    console.log('cehng');
                    this.goodsInfo = result.body.message
                }
            })
        },
        goDesc(){
            //图文介绍
            this.$router.push('/home/goodsdesc')
        },
        goComment(){//评论页面
             this.$router.push('/home/goodscomment')
        },
        addShopCar(){
            this.ballFlag = !this.ballFlag
            // 存储购物车的数据{id:商品id，count：购买数量，price：商品单价，selected：false}
            //拼接出保存到store中的car数组
            var goodsinfo = { id:this.id,count:this.selectedCount,price:this.goodsInfo.sell_price,selected:true,title:this.goodsInfo.title}

            //调用
            this.$store.commit("addToCar",goodsinfo)
        },
        beforeEnter(el){
            el.style.transform = "translate(0,0)"
        },
        enter(el,done){
            el.offsetWidth;
            //获取小球在页面中的位置
            const ballPosition = this.$refs.ball.getBoundingClientRect();
            //购物车位置
            const badgePosition = document.getElementById("badge").getBoundingClientRect();

            const xDist = badgePosition.left - ballPosition.left;
            const yDist = badgePosition.top - ballPosition.top;

            el.style.transform = `translate(${xDist}px,${yDist}px)`;
            el.style.transition = "all .6s cubic-bezier(.4,-0.3,1,.68)";
            done();
        },
        afterEnter(){
            this.ballFlag = !this.ballFlag
        },
        getSelectedCount(count){
            this.selectedCount = count;
            console.log(this.selectedCount)
        }
    }
}
</script>
<style lang="scss" scoped>
.goodsinfo-container{
    background-color: #eee;
    overflow: hidden;
    .now-price{
        color: red;
        font-size: 16px;
        font-weight: bold;
    }
    .mui-card-footer{
        display: block;
        button{
            margin: 15px 0;
        }
    }
    .ball{
        width: 15px;
        height: 15px;
        border-radius: 50%;
        background-color: red;
        position: absolute;
        z-index: 999;
        top: 390px;
        left: 146px;
    }
}
</style>
